Marshall h



Feb. 20, 1923..

, H. M. CHASE TRANSMISSION DEVICE Filed Nov. 19, 1919 2 sheeta-sheet 1 F eb. 20, 1923.

H. M. CHASE TRANSMISSIONEVICE Filed Nov. 19, 1919 2 sheets-sheet 2 Pai-,esse lifes. 2op 1923.

infinitif? MARsHALLJci-I'Asn, oF Gennnisnnwisconsm; yi1iiiesrif.\.ni1 ii. cries-ii 4 PATENT ADMrN'IsTRATon or' SAID HAnnvMAnsHAL-L CHASE, 'immensen Applicativi@ fined November 19, 1919. serial No. 339,018'. l

`To aZZw/z-om/trmay concern. n 4 n Be it 4known that l, HARRY MARSHALL (li-msn, a fcitizen of the United States, and y Zin elevation, takenl through `my "improved f, combined fly wheel and transmission taken resident of Green Bay7 inthe county of llrown 'and State of l/Visconsin, have inventfedpn'ew and useful Improvements inTransmission Devices, of which the following is ,a description,v reference being hady toi the accompanying drawings, lthis specication. i i

The presentv invention relates to certain new ,and useful Improvements in transmission devices, and refersmoreparticularly to' a transmission device especially adapted for n n '1I employ with its contr use with automobiles or other similarvehicles. n f M i @ne objectief they presenty inventionis to jiplrovide a transmissionl device :tor drivingly Jconnectinga, driven shaft and a drive shaft` 'may be rreadily varied;l

4whereby the speed ratio between saidlshats Another object of my invention is to lprovide a transmission device which is fluid controlled and which yis capable of dri-vingly` fc'cn'necting a ydriven i shaft and a ,driving` l:shaft lat any speed ratio between a deadstop 'and adirect drive with respect'tofsaid shafts. 2 .further object'otthe present invention Referringnow,.`niore particularly 4tov the accompanyingdr'awings,-the numeral 10y desis to provide a transmission device of the class described ywhichwill'be contained with- .in the engine ly wheel and therebygreatly reduce the weight and space y'now 'taken up by the transmission device in every Vday. use.` A still,4 furtherobject of4 the jpresent invention is to` `provide a transmissiondevice of the class described which will be' contained within the 'fly wheel and which is so `constructed astov properly vbalance the fly wheel.

v jVVith the above and other objects in'view kwhich, will appearas the description proceeds, iny'invention resides in the novel construction?A combination and rarrangement of parts substantially yas hereinafter described and more particularly ydefined by the appended claims, it being understood that such changes inthe preciseembodiment of the herein disclosed invention" maybe made as come within the scope ofthe claims. y

`In the accompanying drawing,v I have illustrated one complete example ofmy invention constructed according to the best mode l. have so' far devised for the practical Figi 2.

Fig. 2 whichv` are apart of Y jployed. if The which: f. y

Fig. 1 is a viewfpart in section and part on 'the' plane indicated by the line 1--1 of is-'a sectional view taken therethroughvon the "line 2 2 of Fig. 1.

3 is a view7 part in section and part in elevation,said view being :taken-fonthe line3-3,Ofl1`ig. 1.. i n

Fig. 4.- is anenlargedsectionalview. taken through one of the transmission cylinders olling valve, parts 'beingy broken away and in section..

' 5 isy a sectional view taken on the plane indicated by the line 5-1-5 of Fig. y1.

Fig. Gis a sectionalrview l,talien on the line .A6-6.0i Fig. y. 'f- Fig. 7 is av-sectional viewvsimilartollig;

6` 'with the .valveportipartly i opened, said KAviewbeing taken ongthelinefZK-Y yoflligl, nl

and

view being taken ony v a-llig.` 8 is a fragmentaryl plan `view/ lof the` port leading into the:valveylindei', said ignates an engine crank 4shaft or driving ing 'its forward end freely yjournalledin the fly wheely ,11 as .at '13 and yhaving its ,rear

yend connected with the; drive wheels ,of the vehicleupon which the transmissionis eminterior lclnimber 111- `and Ahas a plurality ci." cylinders 1 formed] .therein with .the aires of theiry boresl radiating ,-roiii. the center of' the fly' wheel. Adjacent'each cylinder kbore 161s a'valve receiving here 17 having n a port or opening 18 in its upper end Aadapt-- ed to be .connected with port. 19 leading from the cylinder to the .bore .17 by means lly wheel. 1l is'recessed to 'provide an of alrotary valve 20 to v'belater *describedl rllwo eccentrics 21 are'fixed to the portion 'of the shaft 12 disposed fwithinthe chamber 14 y(of the fly wheel and have theirl throws oppositely offset `and connected by 'means of eccentric straps 22 with pistons 23-workable within the cylinders 16. In order to preserve the balance of the fly wheel 11, oppo site cylinders `16 have tlieirpistons conected with different eccentrics 21 as best shown in Fig. 2, whereby the opposite pistons will at allftiines be equally distantvfromnthe fly wheel center, This arrangement is `provided by slightly offsetting the opposite cylinders, as best shown in Fig. 1 and theeccenti-ic straps 22 engaging the saine eccentrichave what is commonly termed inl the' art a Aforked interlocking connection with the eccentric.

Thechainber 14 of the 'lily wheel is enclosed by means of a p late 211 and is partly filled lwith a suitable fluid, preferably "oil, which `fluid is thrown, by centrifugal force. from the center ofthe fly ,wheel and will be disposed outwardly of the dotted line 25,

see Figs. 2 and 5, when the fly wheel is ro- .tated vIVith the fly wheel being rotated and 4the ports 18 and 19 in communication as `de picted inFig. 3, with the Aindentation or recess 26 ofthe valves 20.in register there-- with, the fluid or oil within vthe vchamber 111 will be" free to pass in and out of the cylinder `1:6 andconsequently the pistons 23 will'work 'within thecylinders and the driven :shaft 12 remain stationary. llVhen the valves 2O are operated to partly close the .port 18 as depicted in Fig. 7, the passage ofL fluid to and from the'cylinders 16 is slightly obstructed andtherefore the shaft 12 will be rotatedif the slippage offluid through the ports 18 and 19 `is insuflicient to permit the free working of the pistons within the cylv inders.

j As the opening of the port 18 is further decreased the traction or driving connec tion between the shafts 10 and 12 will also be increased and when the ports 18 and 19 vare closed olf from each other a straight drive will be had between the shafts 10 and 12 as will be obvious, this preventing the working of the pistons 23 within the cylinders. In order to insure `the efficient opera-y tion of the valves 20 they must be worked 1n unison and to accomplish this I provide a disc member 27 which is carried by a sleeve member 28 having one end outwardly of the fly wheel cover 24; and connected with a control lever 29. v vThe disc 27 has a groove 30"k formed in its vouter periphery and in the groove 30 is mounted a pin -or stud 31 formed on the lower endof eachvalve 20 and so arranged that whenthe disc l27 is moved outwar'dly byan inward pull on the lever 29 thev'al-ves will'be. operated yto close the ports 1S-and 19 andthus connectith'eshafts 10 and 12'jas before 'described.` 'i

l The'recess 26 'of each valve 2O is so positioned with respect tothe stud '31 that the stud 3l will never need be moved to a' dead center andI thus prevent its return to the opposite position, "By this structure it will vreadily beseen that the valves 2O are rotated tive in unison and that the shaft l2 is journalled within the sleeve member 28, and that the sleeve member 28 is also freeto rotate within the packing gland 32 formed in the cover and thus friction between the parts is re-- "duced to a minimum.

The valves 20 are rotatably secured in the bore 17 against dislodgnient by means of a pin 33 secured in the wall enclosing each bore 17 and projecting into an annular groove or channel'tforined in each valve 20. To prevent any fluid which may .be forced between the outer end of each valve v2O and the adjacent valve bore 17 from binding the valve against the pin I provide a. small by-pass opening 35 connecting;

'the small space between the outer end of the transmission.

"F rom the foregoing description taken in connection with the accompanying drawing, it will'be readilyseen `that Ivprovide' a translmission device which willefficiently couple the driven shaftand 'the `drive shaft ltogether at varying' speed ratios and vvthat'the change from oneratio to another is very vgradual in ,contra-.distinctionwith the selecl ear transmissions now .in general use. It will also be seen that byinaintaining the pistons in oppositeA cylinders at the same distance from the `center at all .times and in all positions the perfect balance .of the 'ny wheel is preserved `and vthus undue vibration is eliminated.

What I clai-m for Inyinvention is:

1. A transmission device comprising a driving and a driven shaft, a fly wheel fixed to the driving shaft and provided with a recess, alluid Vpartly filling said recess, and held in operative position by centrifugal force, a plurality of'cylinders disposed in said recess and carried by the fly wheel, the axes of said cylinders radiating from the within the cylinders,v means connecting said pistons with the driven shaft having oneend disposedwithin the recess of said fly wheel, the L@istons Vof opposite cylinders being at all tiines equally distant from the center of the ily wheel, and rotatable valve m'eansfor controlling the passage of'a Vfluid to and from the cylinders whereby the speed ratio b'e- -t'ween thedriven shaft andthe drive shaft is controlled.

center of said fly wheel, pistons workable 2. A transmission device comprisingra.

driven shaft, a driving shaft, a flywheel Vlined to the driving shaft, said fly "wheel having itsint'eiio'r hollowed out to provide a chamber, a plurality of cylindersradially mounted within said flywheel chamber, a piston workable within each cylinder, eccentrics fixed to the portion of the driven shaft ably opening said valve ports, and a pin on the end of eaoli valve oo-operating with a disk on a 'collar slidable on the drivenshaft for operating said valves in unison, whereby the flow of fluid yto and from said cylinders is controlled to govern the speedratio between the 'driven shaft and the drive shaft.

3. A transmission device comprising a driving and a driven shaft, a Hy wheel fixed to the driving shaft, said fly wheel having its interior hollowed out to provide a Chamfber, a fluid partly filling said chamber and` held in operative position by centrifugal force, A a pluralityl of cylinders radially mounted vwithin said fly wheel chamber, a

piston workable Within each cylinder, eccentrics fixed to the portion of the driven shaft disposed within said ily wheel` said driven shaft being normally free of said fly wheel, eccentric straps connecting the pistons with said eccentrics, valve ports for conf necting the cylinders with said fly wheel chamber, valve means for lclosing and variably opening said valve ports, and means for operating said valve means in unison,

ywhereby the flow to and yfrom said cylinders is controlled to govern the speed ratio between the driven shaft and the drive shaft, said means including a slidably mounted disc connected with the valve means and a control lever for moving said disc to operate said valve means.

In testimon whereof I aliix my signature. i

HAR Y MARSHALL CHASE. 

